I'm currently playing around with the Doom 3 models with the aim of creating some monster sprite sheets. The render as-is looks very plain so I wonder if anyone has some good tips for touching up the graphics. Doing anything by hand is out of the question in light of the number of frames that would need editing, everything has to be batch-compatible.

The blood effect is a cop-out by me, a procedural overlay that makes the greenish blood appear over the skin in the death state. It's hard to do real gore effects with rigged 3D models but I think it looks ok for a first effort. The attack animation has wrong colors for the magic fireball (or rather, correct for Doom 3 but wrong for Doom I + II).